OFFSET
1,1
COMMENTS
No other term <= 68141.
a(4) > 10^5. - Robert Price, Sep 04 2012
PROG
(PARI) is(n)=ispseudoprime(44^n-43^n) \\ Charles R Greathouse IV, Jun 06 2017
CROSSREFS
KEYWORD
nonn,bref,more,hard
AUTHOR
Jean-Louis Charton, Aug 18 2012
EXTENSIONS
Edited by M. F. Hasler, Sep 21 2013
STATUS
approved